The GMC Yukon XL IV, specifically equipped with the 5.3 EcoTec3 V8 engine producing 355 horsepower and paired with a four-wheel drive system and automatic transmission, represents a significant iteration in GMC’s full-size SUV lineup. Produced from January 2014 through December 2019, this variant occupied a central position within the fourth generation (2015-2020) Yukon XL series, offering a balance between capability, space, and relative affordability compared to the higher-trim levels featuring the 6.2L engine. The Yukon XL, as the extended-length version of the Yukon, catered to buyers needing substantial passenger and cargo capacity, particularly families and those engaged in towing activities. This particular configuration aimed to provide a comfortable and capable experience for everyday use and long-distance travel.
Technical Specifications
| Brand | GMC |
| Model | Yukon XL IV |
| Type (Engine) | 5.3 EcoTec3 V8 (355 Hp) 4WD Automatic |
| Start of production | January, 2014 |
| End of production | December, 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 8 |
| Doors | 5 |
| Fuel consumption (urban) | 15.7 l/100 km (15 US mpg, 18 UK mpg, 6.4 km/l) |
| Fuel consumption (extra urban) | 10.7 l/100 km (22 US mpg, 26.4 UK mpg, 9.3 km/l) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 7.5 kg/Hp, 133.9 Hp/tonne |
| Weight-to-torque ratio | 5.1 kg/Nm, 195.7 Nm/tonne |
| Power | 355 Hp @ 5600 rpm |
| Power per litre | 66.6 Hp/l |
| Torque | 519 Nm @ 4100 rpm (382.79 lb.-ft. @ 4100 rpm) |
| Maximum engine speed | 5800 rpm |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | L83 |
| Engine displacement | 5328 cm3 (325.13 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 96 mm (3.78 in.) |
| Piston Stroke | 92 mm (3.62 in.) |
| Compression ratio | 11:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | VVT |
| Engine oil capacity | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Coolant | 16.8 l (17.75 US qt | 14.78 UK qt) |
| Kerb Weight | 2652 kg (5846.66 lbs.) |
| Trunk (boot) space – minimum | 1113 l (39.31 cu. ft.) |
| Trunk (boot) space – maximum | 3446 l (121.69 cu. ft.) |
| Fuel tank capacity | 117 l (30.91 US gal | 25.74 UK gal) |
| Permitted trailer load with brakes (12%) | 3629 kg (8000.58 lbs.) |
| Length | 5697 mm (224.29 in.) |
| Width | 2045 mm (80.51 in.) |
| Height | 1890 mm (74.41 in.) |
| Wheelbase | 3302 mm (130 in.) |
| Front track | 1745 mm (68.7 in.) |
| Rear (Back) track | 1744 mm (68.66 in.) |
| Ride height (ground clearance) | 205 mm (8.07 in.) |
| Minimum turning circle (turning diameter) | 13.1 m (42.98 ft.) |
| Approach angle | 15.3° |
| Departure angle | 20.9° |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 6 gears, automatic transmission |
| Front suspension | Independent coil spring |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs, 330 mm |
| Rear brakes | Disc, 345 mm |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/65 R18 |
| Wheel rims size | 8.5J x 18 |
INTRODUCTION
The GMC Yukon XL IV, powered by the 5.3L EcoTec3 V8 and featuring a four-wheel drive system with an automatic transmission, was a mainstay of GMC’s large SUV offerings from 2014 to 2019. Built on the GMT1XX platform (shared with Chevrolet Tahoe/Suburban and Cadillac Escalade/ESV), the Yukon XL provided a longer wheelbase and increased cargo volume compared to the standard Yukon. This variant specifically targeted buyers who prioritized a blend of towing capacity, passenger space, and everyday usability. It served as a popular choice for families, those with active lifestyles, and individuals requiring a versatile vehicle for both work and leisure. The EcoTec3 engine family represented a significant advancement in GM’s engine technology, focusing on efficiency and power delivery.
Powertrain & Engine Architecture
At the heart of this Yukon XL variant lies the L83 5.3-liter EcoTec3 V8 engine. This engine utilizes direct injection, cylinder deactivation (Active Fuel Management), and variable valve timing (VVT) to optimize both power and fuel economy. The direct injection system delivers fuel directly into the combustion chamber, improving combustion efficiency and reducing emissions. Active Fuel Management allows the engine to seamlessly switch between eight and four cylinders under light load conditions, further enhancing fuel savings. The engine produces 355 horsepower at 5600 rpm and 383 lb-ft of torque at 4100 rpm. The engine’s architecture is a 60-degree V8, known for its relatively compact size and smooth operation. The transmission paired with this engine is a six-speed automatic (6L80), chosen for its durability and ability to handle the engine’s torque output. This transmission features electronically controlled shifting and overdrive for improved fuel efficiency at highway speeds.
Driving Characteristics
The 5.3L V8 and six-speed automatic combination in the Yukon XL delivers a comfortable and capable driving experience. While not as overtly powerful as the available 6.2L engine, the 5.3L provides ample power for everyday driving, merging onto highways, and towing moderate loads. The automatic transmission is tuned for smooth shifts and responsive acceleration. The 6L80 transmission’s gear ratios are optimized for both towing and fuel efficiency, with a relatively deep first gear for launching heavy loads and a high overdrive gear for relaxed highway cruising. Compared to manual transmission equipped Yukon XLs (which were rare), the automatic offers greater convenience and ease of use, particularly in stop-and-go traffic. Compared to the 6.2L variant, the 5.3L feels less urgent in acceleration, but offers a noticeable improvement in fuel economy.
Equipment & Trim Levels
The Yukon XL IV with the 5.3L engine was typically offered in SLE, SLT, and Denali trim levels. The SLE trim served as the entry-level option, featuring standard amenities such as cloth upholstery, a basic infotainment system, and tri-zone automatic climate control. The SLT trim added leather upholstery, heated front seats, a more advanced infotainment system with navigation, and additional convenience features. The Denali trim, the most luxurious option, included premium leather, unique exterior styling, and a host of advanced features like adaptive suspension and a premium audio system. Common optional extras included a rear-seat entertainment system, power-adjustable pedals, and a sunroof. All trims offered standard safety features like ABS, stability control, and multiple airbags.
Chassis & Braking
The Yukon XL IV utilizes a fully boxed frame for enhanced rigidity and durability. The front suspension consists of independent coil springs, while the rear suspension employs an independent multi-link setup. This suspension configuration provides a comfortable ride quality and good handling characteristics for a vehicle of its size. Braking duties are handled by ventilated discs at all four corners, with larger rotors at the rear (345mm) compared to some lighter-duty GM SUVs. The anti-lock braking system (ABS) is standard, providing enhanced stopping power and control in emergency situations. The Yukon XL’s substantial weight necessitates a robust braking system to ensure adequate stopping distances.
Market Reception & Comparison
The Yukon XL IV with the 5.3L engine was generally well-received by automotive critics and consumers alike. It was praised for its spacious interior, comfortable ride, and capable towing capacity. Fuel economy, however, was a common criticism, as expected for a large SUV. Compared to the 6.2L Yukon XL, the 5.3L offered a more affordable price point and slightly better fuel economy, making it a more practical choice for many buyers. Against competitors like the Ford Expedition and Chevrolet Suburban, the Yukon XL held its own in terms of space, features, and overall value. Reliability reports generally indicate good long-term durability for the 5.3L EcoTec3 engine, although some owners have reported issues with oil consumption.
Legacy
The 5.3L EcoTec3 V8-powered Yukon XL IV remains a popular choice in the used car market today. Its combination of space, capability, and relative affordability makes it an attractive option for families and those needing a versatile SUV. The L83 engine has proven to be reasonably reliable, although regular maintenance, including oil changes and monitoring for oil consumption, is crucial. The Yukon XL’s robust construction and durable components contribute to its longevity, making it a vehicle that can provide many years of reliable service. The fourth-generation Yukon XL, and this specific variant, represents a significant step forward in GM’s full-size SUV offerings, balancing practicality, comfort, and capability.
